Java Utililty Methods JTable Header

List of utility methods to do JTable Header

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Description

The list of methods to do JTable Header are organized into topic(s).

Method

ColorgetTableHeaderBackground()
get Table Header Background 
return UIManager.getColor("TableHeader.background");
ColorgetTableHeaderColor()
get Table Header Color 
return UIManager.getColor("TableHeader.background");
StringheaderString(JTable t)
header String 
return headerString(t.getColumnModel());
booleanisColumnSelected(JTableHeader tableHeader, int columnModelIndex)
true if the given column model index is selected in the given JTableHeader . 
int selectedColumn = getSelectedColumn(tableHeader);
return selectedColumn >= 0 && selectedColumn == columnModelIndex;
booleanisRowHeaderVisible(JTable table)
is Row Header Visible 
Container p = table.getParent();
if (p instanceof JViewport) {
    Container gp = p.getParent();
    if (gp instanceof JScrollPane) {
        JScrollPane scrollPane = (JScrollPane) gp;
        JViewport rowHeaderViewPort = scrollPane.getRowHeader();
        if (rowHeaderViewPort != null)
            return rowHeaderViewPort.getView() != null;
...
voidlayoutHeaders(JTable p_Table)
layout Headers 
int column = 0;
for (java.util.Enumeration columns = p_Table.getTableHeader().getColumnModel().getColumns(); columns
        .hasMoreElements(); column++) {
    TableColumn c = (TableColumn) columns.nextElement();
    Component component = c.getHeaderRenderer().getTableCellRendererComponent(p_Table, c.getHeaderValue(),
            false, false, -1, column);
    c.setPreferredWidth(Math.max(c.getPreferredWidth(), component.getPreferredSize().width));
voidmakeHeaderFillEmptySpace(JTable table)
Installs a custom Border on the given table's JTableHeader that paints any blank area to the right of the last column header with the JTableHeader 's background. 
table.getTableHeader().setBorder(createTableHeaderEmptyColumnPainter(table));
voidmakeTableHeadersCentered(final JTable table, final boolean dataColsAlso)
Sets a JTable to have the headers be centered. 
((DefaultTableCellRenderer) table.getTableHeader().getDefaultRenderer())
        .setHorizontalAlignment(SwingConstants.CENTER);
if (dataColsAlso) {
    TableCellRenderer tcr = table.getDefaultRenderer(String.class);
    DefaultTableCellRenderer dtcr = (DefaultTableCellRenderer) tcr;
    dtcr.setHorizontalAlignment(SwingConstants.CENTER);
voidmodifyTableHeader(JTableHeader head, Vector columnNames)
Setzt den Header einer JTable 
TableColumnModel m = head.getColumnModel();
if (m.getColumnCount() != columnNames.size()) {
    System.out.println("Column mismatch: " + m.getColumnCount() + "/" + columnNames.size());
    return;
for (int i = 0; i < columnNames.size(); i++) {
    TableColumn c = m.getColumn(i);
    c.sizeWidthToFit();
...
voidpaintHeader(Graphics graphics, JTable table, int x, int width)
Paints the given JTable's table default header background at given x for the given width. 
TableCellRenderer renderer = table.getTableHeader().getDefaultRenderer();
Component component = renderer.getTableCellRendererComponent(table, "", false, false, -1,
        table.getColumnCount());
component.setBounds(0, 0, width, table.getTableHeader().getHeight());
((JComponent) component).setOpaque(false);
CELL_RENDER_PANE.paintComponent(graphics, component, null, x, 0, width, table.getTableHeader().getHeight(),
        true);